diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 4c4fc22717..5bb1b7eaa8 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -5532,6 +5532,9 @@
                     within the function, you can use
                     <filename>${IMAGE_ROOTFS}</filename>, which points to
                     the directory that becomes the root filesystem image.
+                    See the
+                    <link linkend='var-IMAGE_ROOTFS'><filename>IMAGE_ROOTFS</filename></link>
+                    variable for more information.
                 </para>
             </glossdef>
         </glossentry>
@@ -5557,6 +5560,9 @@
                     within the function, you can use
                     <filename>${IMAGE_ROOTFS}</filename>, which points to
                     the directory that becomes the root filesystem image.
+                    See the
+                    <link linkend='var-IMAGE_ROOTFS'><filename>IMAGE_ROOTFS</filename></link>
+                    variable for more information.
                 </para>
             </glossdef>
         </glossentry>